package com.ssm.zhihu_ssm.service;

import com.ssm.zhihu_ssm.entity.Letter;
import com.ssm.zhihu_ssm.entity.LetterReturn;
import com.ssm.zhihu_ssm.entity.QuestionAnswerList;

import java.util.List;

public interface LetterService {

     List<LetterReturn> findLetterReturn(int id);
     List<Letter>  findLetterWith(int id,int fromId);
     boolean delectLetter(int id);
     boolean addletters(int uid,int from_id,String content);
}
